MARCH 7 Journey back in time with National Geographic Society Explorer-in-Residence and University of Chicago professor Paul Sereno, 7 p.m. March 7, Kane Hall, University of Washington, Seattle; free, preregistration recommended (www.burkemuseum.org/events/browse/unearthing_africa_talk
).

SAT Join a Ranger to look for signs of local wildlife and learn what to do when encountering animals in the wild, all ages welcome, 10:30 a.m. Saturday, Lewis Creek Park and Visitor Center, 5808 Lakemont Blvd. S.E., Bellevue; free (425-452-4195 or www.bellevuewa.gov/lewis_creek_park.htm
).

MARCH 7-8 Seattle Office of Arts & Culture in partnership with Waterfront Seattle, artists, designers, historians and advocates explore and discuss the nature of play and how it could effectively be used on Seattle’s developing waterfront, 6-8 p.m. March 7, Seattle Art Museum; 10 a.m.-4 p.m., Seattle City Hall, 6 p.m. March 8, Seattle (waterfrontseattle.org/waterfrontweek/default.aspx).

MARCH 8 Historic Seattle eight-session series on primary research materials in archives in Seattle and King County, 10:30 a.m. March 8, Special Collections, University of Washington Libraries, Suzzallo/Allen Library, Seattle; $5-$10 (www.historicseattle.org
).